
%0 Journal Article
%A Gregson, AK 
%A Moxon, NT 
%A Weller, RR 
%A Hatfield, WE 
%T Ferromagnetic exchange coupling in sodium biscarbonatocuprate(II) trihydrate
%J Australian Journal of Chemistry
%D 1982/08/01
%V 35
%N 8
%P 1537-1541
%K 
%R https://doi.org/10.1071/CH9821537
%U https://www.publish.csiro.au/paper/CH9821537 
%X The magnetic properties of sodium biscarbonatocuprate(II) trihydrate, Na2Cu(CO2)2,3H2O, have been measured in the temperature range 1.8-42 K. Magnetic susceptibility and magnetization measurements provide evidence for ferromagnetic interactions in this linear-chain compound. The magnetic susceptibility data are compatible with a Heisenberg linear chain; the best-fit parameters for the complete data set are: J 1.22 ±0.04cm-1, g 2.18 ± 0.01, and zJ'-0.28 ± 0.02cm-l. Data in the temperature range 7-42K yield the best-fit parameters J1.37 ± 0.08 cm-1, g 2.12 ± 0.01, and zJ' 0.0 cm-1. The g value from this fit agrees with the g value of 2.10 obtained from a fit of the data in the temperature range 10-42 K to the Curie-Weiss law. 
